Chi liang cho



p 1953 CHI LIANG CHO I'ENS-'IRANSFIR IVIECHANISM 2 Sheets-Sheet l Filed Jan. 11, 1949 INVENTGT( CHI LIANG- CHO Sept. 1, 1953 CHI LIANG CHO TENS-T ANSFER MECHANISM 2 Sheets-Sheet 2 Filed. Jan. 11, 1949 INVENTOR HI LIANG- C o By w t'll f AG-ENTS click roller Gil may enter upon which a spring, not shown in detail, rests, housed in a, longitudinal groove 59 of click roller 60 clesignated as the 'operator" in the description that follows.

For transmitting each of the set numeral values to the windows of the machine, not shown, for viewing by seller and buyer, a pair of indicating mechanisms, not shown, should be provided for each digit or other data to be shown and for each window. These indicating mechanisms are operated from the rock Shaft through suitable lever arrangernents, not shown.

The keys, supported in the cover I and in the bearing plate 2, consist, as Fig. shows, of a head part 4 and a guiding part 5 with a foot 5?) and a groove, not shown, at a suitable location for taking the spring 6; they are provided also with a nose, not shown, acting as a stop against the bearing plate 2 and at the same time as a locking cam for the key-lock 8 when in the pressed-down position. The foot lengths 5h of the keys 4 of the larger numerals (4 9) are also shaped in steps corresponding to the steplike contacts 22 on the racks 20, whilst the feet of the keys of the smaller numerals (1 3) are all of the same length.

Beside each row Of keys a key lock 8 is arranged, which is swingingly supported on the parallel stationary bars 12, i3 by means of two pins 9 and these locks are pressed by Springs l5 against noses, not shown, on the guiding parts 5 of the keys, so that locking takes place when the keys are depressed. The front part of each key-lock 8 is connected to still another locking arm I I, by means of which the racks 20 are firmly held in the initial position by means of their teeth 2 I. A recess under the nose of each of the guiding parts 5 of the keys is cut-in deeper than the upper part thereof. After depressing the keys the key-lock '8 makes a small swing to the side, so that the racks 20 are freed from the locking arm ll.

The key spring 5 is interlaced in the form of a net under the cover 1 in grooves [4 of the rails 7, supported on the transverse bars H, 13, the interlacing being such that the spring becomes placed diagonally between the neighloouring rails '1 at ,distances of two grooves from each other, t being possible to arrange the key guiding part 5 in the middle of the diagonals. The Spring 6 consists of a closely Wound coiled spring and is laid into the rail 'I either in one piece or in several pieces arranged in groups. The keys 4, 5 are pushed into the cover I direct from above; and by its springing action, the spring 6 is automatically inserted into the grooves of the key part 5, whereby the spring 6 acts at the same time as a stop against the cover i, in order to hold the keys firmly in a raised position. The object of arranging the interlaced spring 6 diagonally is to obtain the greatest possible length of spring for each key.

Now with respect to the carrying-over of the tens, members for carrying over the tens are provided for the grand-total counting mechanism IIS and for the detail-total counting mechanism IT, Figs. 1 to 3. Both members are arranged to be commonly supported on one centralised bearing. They consist of two Shift levers 31, 3'Id, which are pivotally supported beside each other on the shaft 38, and of two Shift toothed racks 44, 440, for the detail total and the grand total and also of a common engaging roller 35 with the engaging teeth 34; the roller 35 is pivotally supported in the two side walls and. is in connection with the drive of the machine. The Shift lever .31 (Figure 3) is bent U-shaped above and has an upper arm .39 with the engaging tip 4317 and a, lower arrn with two engaging teeth 33, 36: and. also a click cam 3i. The Shift lever 3'icL is shaped the same 'as the Shift lever 31, except that instead of its U-shaped bearing, it has a bushing 38h with which the lever 37C& is supported between the U- shaped bend of the shaft lever 3! on the common Shaft 38. The Shift racks 44, 4461 .are supported, each displaceable by one unit, in common on the cross bars 26, 430, and 47 by means of guiding cornbs 27, 46 and are provided on the upper eolges with a row of teeth and on the lower edges with a nose 32, 3211 bent downwards at right angles, and are Secured by a click spring 25 in their proper position. For each column of numerals the engaging roller 35 is provided with two engaging teeth 34 for the Shift levers 37, 3'l'OL, which teeth 34, in their order from the lowest to the highest nurnerals column, are arranged sorewlike behind each other, and spaced at the same angle apart on the shaft 35, i. e. the tooth 34 corresponding to each nurneral column stands opposite to the engaging tooth 35 of the corresponding Shift lever 37.

The tens of the grand or detail totals are carried over as follows: For instance, as shown as the Shift tooth ii] or 4l of the toothed wheels IG or I' of the grand or detail total mechanisms passes over from 9 to ili, the Shift tooth comes up against the arm point 4532) or 4119 of the Shift lever 3"! or 3io of the next higher decimal place, whereby the upper arm 39 or 336& of the Shift lever 37 or 31C& is raised and swivels round the Shaft 38 through a Shift unit, the new position being maintained iixed by the spring 28 and the click cams 3l, 3161 and the Shift tooth 33 of the Shift lever 31 which stands in engagement with the bent nose 32 of the Shift-tooth rack 44, Fig. 1. Both end phases of the calculating operation cause the machine to be advanced, after which the Shift tooth 34 swings over the engaging tooth 36 of the Shift lever 37 so that this lever is brought back into the initial position, whereby the Shift toothed rack 44 is carried along through a Shift unit since its nose 32 is in engagernent and turns the respective counting wheel IES Or I'I also through one Shift unit. In order to bring the Shift toothed rack 44 back again into the initial position while the counting mechanism l or Il is brought back out of engagement with the Shift toothed rack 44 or 4461, its oppositely situated tooth bar 33, by rotating the main axle 15, is brought against the nose 29 of the Shift toothed rack 44 or 44(1 and the Shift toothed rack is thereby pushed back. The Shift toothed racks 44, 4.4(t lie underneath each other; rack 44ti thus being concealed in Fig. 1 by rack 44; both racks 44 and 440& lie, however, parallel to each other, whereby those for the grand-total counting rnechanism H lie in the same planes as the toothed racks 23, whilst the others of the detail-total counting mechanism are arrangecl displaced through a certain distance. The described system of carrying over the tens in accordance with the invention by pivoting shafts 55 situated beside each other has, in contrast to known systems, great advantages in that on the one hand it requires considerably fewer parts, but on the other hand works absolutely positively, 1. e. has no movements produced by Springs.

I claim:

1. In a calculating registering device, particularly for cash. registers, book-keeping and other 

